Tensions remain high in the region following unrest that
killed at least 35 people. In a separate incident, a politician
from a Kurdish Islamist party was shot dead in the eastern city
of Bingol.

Ethnic Kurds rioted in several southeastern cities this
month over what they perceived as the government's refusal to
help Syrian Kurds fighting Islamic State militants for more than
a month in the besieged town of Kobani.

The unrest threatens a shaky peace process in which the
government is negotiating an end to a 30-year insurgency with
the jailed leader of the outlawed Kurdistan Workers Party (PKK)
who called a ceasefire last year.

Kurdish forces fighting the Islamic State in Kobani are
closely affiliated with the PKK.

After several hours in captivity, the Dicle Electric Co.
workers were released near the town of Hazro, about 30 km
northwest of where they were abducted by a group of masked men,
the source said.

The source had earlier said the assailants could be belong
to the PKK, who have in the past kidnapped soldiers, engineers,
journalists and others, sometimes with the aim of securing a
prisoner exchange.

In Bingol, Fethi Yalcin, 35, was killed outside of his home
by unidentified gunmen who shot him with a rifle from a car. He
was a member of the Islamist Free Cause Party, or Huda Par,
security officials said.

Though both mainly Kurdish, left-leaning PKK loyalists and
Huda Par members have clashed in the past and again earlier this
month.
(Reporting by Seyhmus Cakan; Writing by Ayla Jean Yackley;
Editing by Alison Williams)